<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:arial,helvetica,sans-serif;font-size:10pt"><div>You have to include <span class="yshortcuts" id="lw_1287761760_0">process
/ manufacturing</span> loads into the model and account their heat gain
into the space. If HVAC system serves the process loads, then ASHRAE
90.1 does not apply to that particular system, you cannot exclude them. <br><br>You
can also claim <span class="yshortcuts" id="lw_1287761760_1">energy
savings</span> relate to process loads by following ASHRAE 90.1 -
section G2.5<br><br>Senthil kumar ar<br></div><br><div style="font-family: arial,helvetica,sans-serif; font-size: 10pt;"><br><div style="font-family: arial,helvetica,sans-serif; font-size: 13px;"><font face="Tahoma" size="2"><hr size="1"><b><span style="font-weight: bold;">From:</span></b> Michael Mantai <mmantai@systemworcx.com><br><b><span style="font-weight: bold;">To:</span></b> equest-users@lists.onebuilding.org<br><b><span style="font-weight: bold;">Sent:</span></b> Thu, October 21, 2010 9:26:27 PM<br><b><span style="font-weight: bold;">Subject:</span></b> [Equest-users] Manufacturing Process Loads for LEED EA Credit 1<br></font><br>
I've read the posts regarding how to consider process loads related to<br>manufacturing facilities, particularly with respect to how to even meet the<br>required prerequisite LEED energy performance requirements when the process<br>load dominates energy usage. I'm not sure I agree that manufacturing<br>process loads need to be considered in the model, and would like to throw<br>this thought process out for any opinions.<br><br>ASHRAE 90.1 Section 2.3 states that "The provisions of this standard do not<br>apply to:... (c) equipment and portions of building systems that use energy<br>primarily to provide for industrial, manufacturing, or commercial<br>processes."<br><br>I'm interpreting this to mean that Appendix G, as a provision of 90.1, also<br>does not apply to systems used in manufacturing processes.<br><br>90.1 Table G3.1 Item 12 states that "Receptacle and process loads, such as<br>those for office and other equipment, shall be estimated based
on the<br>building type or space type category and shall be assumed to be identical in<br>the proposed and baseline building designs..."<br><br>I'm interpreting that this reference to "process loads" only applies to<br>process loads that are NOT related to manufacturing.<br><br>The LEED reference guides and CIRs do not appear to address manufacturing<br>loads specifically as to whether they can be excluded.<br><br>Admittedly this interpretation is self-serving as we are trying to model a<br>facility with dominant manufacturing energy use.<br><br>What I would like to do is ignore the loads associated with the<br>manufacturing process. This would include both the electricity used by the<br>equipment as well as cooling and ventilation needed specifically for the<br>manufacturing equipment. The "process" load for LEED modeling purposes then<br>would only include things such as in a typical office (computers,<br>appliances, other plug loads),
which would most likely be done using the 25%<br>minimum.<br><br>For those of you that have modeled manufacturing facilities, I'd like to<br>know if and why you chose to include the manufacturing process loads in the<br>model, and if you also excluded the cooling energy if cooling is only<br>required for the equipment (referring to space cooling for the areas housing<br>the equipment, not water cooling).<br><br><br>_______________________________________________<br>Equest-users mailing list<br><span><a target="_blank" href="http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org">http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org</a></span><br>To unsubscribe from this mailing list send a blank message to <a ymailto="mailto:EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG" href="mailto:EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG">EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG</a><br></div></div>
</div><br></body></html>